Parker MP11041 Compression Tube Nut 9/16-24 Brass Sae J-512

Product Description

The PARKER MP11041 is a brass compression tube nut designed for use in fluid and pneumatic line connections where a reliable, leak-resistant seal is required. Threaded at 9/16-24 and sized for 5/16-inch outside diameter tubing, this nut conforms to SAE J-512 standards and carries a maximum working pressure of 300 psi. Constructed from brass, it provides corrosion resistance in a wide range of media handling applications. The part is commonly installed by HVAC technicians, plumbers, and refrigeration mechanics working on tubing assemblies that demand consistent compression fittings across multiple connection points.

This compression nut is suited for use in residential and light commercial fluid-handling systems, including refrigerant lines, fuel lines, hydraulic tubing, and instrumentation circuits where SAE J-512 compliance is specified. The 9/16-24 thread size and 5/16-inch tube OD make it a standard choice when assembling or servicing compression-style tube fittings on copper or compatible tubing. It is sold in packages of 10, making it practical for service vehicles and shop inventory where these nuts are frequently consumed.

Key Features

• Brass construction provides corrosion resistance and reliable sealing performance
• 9/16-24 thread size matches SAE J-512 compression fitting standards
• Rated for 5/16-inch outside diameter tubing
• Maximum working pressure of 300 psi
• Rated for temperatures from -65 degrees F to 250 degrees F (approximately -54 degrees C to 121 degrees C)
• Packaged in quantities of 10 for convenient stock replenishment

Compatibility

Designed as an SAE J-512 compliant compression tube nut for use with 5/16-inch OD tubing and standard 9/16-24 compression fitting bodies across residential and commercial fluid-handling and refrigeration applications.

Installation Notes

Installation should be performed by a qualified technician familiar with compression tube fitting assemblies. De-pressurize and isolate the line before disassembly or connection. Hand-tighten the nut onto the fitting body first, then use an appropriate open-end or flare-nut wrench to achieve a proper seat — do not over-tighten, as brass compression nuts can crack if overtorqued. Verify the tubing end is clean, deburred, and cut square before seating the ferrule and nut.